396 results about "Top drive" patented technology

The embodiment of the invention provides an underground tool face dynamic control method and system based on reinforcement learning, and belongs to the technical field of directional drilling. The method comprises the steps of collecting drilling state data of a target well, performing data preprocessing on the drilling state data, and constructing a corresponding state vector based on the preprocessed drilling state data; calling an action decision model obtained by training based on a DDPG algorithm based on the state vector to obtain an action instruction; wherein the network strategy parameter of the action decision model is obtained by correcting the previous network strategy parameter based on the deviation between the current drilling state data and a pre-constructed reward function; analyzing the action instruction to determine a target physical action; and executing top drive torsional pendulum based on the target physical action, and recycling an execution result until the execution result indicates that the tool face angle meets the expectation. According to the scheme, the stability and the real-time control effect under the working conditions of complex well sections and severe disturbance are improved.

The invention relates to the technical field of cables, and discloses a power shielding cable stranding device for a top drive of an oil platform and a production process, the power shielding cable stranding device comprises a supporting assembly, the upper part of the supporting assembly is provided with a wire feeding assembly, a stranding assembly, a guide assembly and a traction assembly, and the wire feeding assembly is located at the side part of the upper part of the supporting assembly; the stranding assembly, the guiding assembly and the traction assembly are transversely arranged on the upper portion of the supporting assembly along the supporting assembly, the supporting assembly comprises a bottom plate, and a first driving motor is installed on the upper portion of the bottom plate. By arranging an adjusting plate, the problem that a stranded wire is locally bent due to improper storage and carrying or material rigidity difference can be solved. Precise correction is achieved by sensing local deformation of the stranded wire and applying extrusion and drawing force, the situation that the cross section structure of the cable is not uniform due to deflection of a bent part after stranding is avoided, the structural strength of the cable is guaranteed, electric energy loss is reduced, the power transmission efficiency is improved, and the structural stability and transmission performance of the stranded cable are guaranteed.

The utility model discloses a well drilling top drive wash pipe assembly structure, which relates to the technical field of wash pipe sealing and comprises a wash pipe body, an upper connecting union connected to the upper end of the wash pipe body and a lower connecting union connected to the lower end of the wash pipe body. A packing assembly is arranged between the washing pipe body and the lower connecting union and comprises a packing base pipe, a lower end sealing seat, a plurality of sets of abrasion-resistant packing, a plurality of stages of spacer rings and an upper end sealing seat, wherein the packing base pipe is arranged on the periphery of the washing pipe body in a sleeving mode and forms a packing ring cavity, and the lower end sealing seat, the multiple sets of abrasion-resistant packing, the multiple stages of spacer rings and the upper end sealing seat are sequentially arranged in the packing ring cavity in a sleeved mode in the axial direction. The washing pipe is characterized in that a grease groove surrounding the washing pipe body is formed in the inner wall of the upper end sealing seat, and the grease groove is filled with lubricating grease. According to the utility model, the lubricating effect of the rotary seal between the washing pipe body and the packing assembly can be provided, and the friction is reduced, so that the effects of reducing the abrasion speed and prolonging the service life are achieved.

The invention relates to the field of drilling ship manufacturing, in particular to a data acquisition method and system of a driver for oil exploitation. Six-degree-of-freedom motion data of a ship motion reference unit, pressure data of a hydraulic cylinder of a marine riser tensioner, hook load data of a drill string hung by a top driving system, torque data and radial acceleration data are synchronously collected, and collected multiple paths of signals are aggregated to form synchronous multi-source vibration data flow. According to the method, multiple types of vibration, load and pressure signals are synchronously collected and aggregated and segmented under the unified time reference in the operation process of the drilling ship, so that the consistency of multi-source data on the time scale is ensured, and the real dynamic coupling relation can be reflected by subsequent calculation; in the signal processing stage, key acceleration and pressure fluctuation information are extracted, and the actual working state of the marine riser system is represented through dynamic response characteristics constructed by the peak position, the peak amplitude and the power spectral density.

The invention discloses a mineral hydraulic lifting system and method for deep-sea mining, and relates to the technical field of deep-sea mining, the mineral hydraulic lifting system for deep-sea mining comprises a water surface supporting platform, a slurry pump set, a drill rod, a marine riser, an underwater workstation and a top driving part, the upper end of the water surface supporting platform is provided with the slurry pump set and the top driving part; one end of the drill rod is in transmission connection with the top driving part, the other end of the drill rod penetrates through the water surface supporting platform, the drill rod is sleeved with a marine riser, an annular cavity is formed between the drill rod and the marine riser, and the lower ends of the drill rod and the marine riser are connected with the underwater workstation. A power device and parts of the lifting system are arranged on the water surface, pipe fittings which are connected between the water surface supporting platform and the underwater work station and are only provided with marine risers and drill rods are convenient to control and maintain, the number of underwater equipment is reduced, high-power electrical equipment is reduced, and related power, control and accessory parts can be greatly optimized; the use risk of underwater equipment is reduced, and the reliability of the system is improved.

The system for automating well construction operations includes a plurality of sensors, such as a fingerboard latch position sensor for providing position of a fingerboard latch, a stick-up height sensor for determining a height of a portion of a tubular section extending from a well center, a pipe handler rotation sensor for detecting a position of a pipe handler, a bell guide clearance sensor for measuring a distance between a bell guide and a tool joint, a link tilt position sensor for measuring an angle of a bail with respect to a top drive, an elevator latch status sensor for detecting whether an elevator latch is open or closed, and a power slips sensor for detecting whether a power slips is open or closed. Further, the system includes a controller in communication with the plurality of sensors and configured to command one or more equipment based on inputs from the sensors.

The application provides a downhole hydraulic back-off tool, characterized in that the back-off tool comprises a hydraulic anchor, a hydraulic back-off device and a telescopic compensation mechanism, and the power part is composed of a driving cylinder, a driving pin, an anti-rotation cylinder, a rotating cylinder, a third spring, a central shaft, an inner ratchet mechanism, a driving shaft and an outer ratchet mechanism; the one-way left-rotation part of the hydraulic back-off device comprises the inner ratchet mechanism and a second spring, and the anti-rebound right-rotation part comprises the outer ratchet mechanism and a first spring. The application makes all the torques of the workover operation be transmitted to the fishing tool through the relative movement of the inner ratchet mechanism and the outer ratchet mechanism from the hydraulic back-off device, and the working string does not need to transmit the torque to the downhole through the surface wellhead rotary table or the top drive, the hydraulic anchor is anchored and unanchored through the pressure in the string, and the anchor provides a fulcrum function for the timely cooperation of the power torque output of the hydraulic back-off device; the telescopic compensation mechanism is used for compensating the axial displacement of the back-off tool.

The invention relates to the field of offshore oilfield development, and discloses an offshore drilling well control automation simulation system and an operation debugging method thereof.The offshore drilling well control automation simulation system is characterized in that an upper computer is connected with a PLC control box through an optical fiber, and a controller transmits a control signal to the PLC control box through the optical fiber; the PLC control box transmits information of the sensors arranged at the key connection points to the controller through optical fibers; the throttle manifold and control device is connected with the PLC control box through an optical fiber to simulate fluid flowing out of the annulus to generate a throttling effect; the blowout preventer group and the control device are connected with the PLC control box through a cable; the liquid circulation simulation device is connected with the PLC control box through a cable and simulates liquid circulation during well drilling. The gas invasion annulus simulation device is connected with the PLC control box through a cable and simulates gas invasion annulus during well drilling; the simulation top drive and the simulation winch are connected with the PLC control box through cables until the simulation drill column is located at a preset position. According to the invention, manual misoperation probability and manual operation time can be reduced, and offshore drilling well control efficiency can be improved.

A special double-lifting-ring balancing device for a top drive device relates to the field of oil exploration and comprises the top drive device, the top of the top drive device is connected with a connecting device, a gear box is arranged at the bottom of the top drive device, the connecting device is connected with the gear box through a lifting ring, and the lifting ring is movably connected with the connecting device. The lifting rings are rotationally connected with the gear box, the top drive device is lifted through the two lifting rings and is in a stable state, the stress degree of the double lifting rings is far about that of a single lifting ring, and the stability of the top drive device can be greatly improved while the top drive device is more stable.

The invention discloses an automatic hard well shut-in method and system integrated with a petroleum drilling machine control system, and relates to the technical field of petroleum drilling machine well control. According to the method, the drilling working condition is monitored in real time, an overflow trigger index is calculated, the overflow risk in a shaft is judged, and a hard well shut-in process is started after an alarm is given; the position of a hook and the position of a drill rod joint are monitored in real time, a winch safety stop index is calculated, whether the operation state of the winch is safe or not is judged, the hook is automatically moved to the optimal stop point, and the winch is braked; top drive and slurry pump linkage control is started, a top drive and slurry pump linkage control coefficient is calculated, whether the static working condition before well control is met or not is judged, and equipment is stopped or a strategy is executed accordingly; monitoring the action of the blowout preventer and the state of the hydraulic system, calculating the consistency index of the action of the blowout preventer, judging whether the action of the blowout preventer meets the well shut-in requirement or not, and giving a strategy if the action does not meet the well shut-in requirement; real-time judgment of the overflow risk and automatic hard shut-in of the well can be achieved, the safety of the well mouth is guaranteed, and the risk of manual misoperation is reduced.

The invention discloses a disassembly-free top drive drilling device pulley and guide rail system, relates to the field of petroleum drilling engineering, and solves the problems that a top drive drilling device is too long in assembly and disassembly time and too high in safety risk when applied to a telescopic derrick drilling machine. The derrick is divided into an upper derrick section and a lower derrick section; the slide rail comprises an upper slide rail section and a lower slide rail section; the upper-section sliding rail and the lower-section sliding rail are hooked through a hook; an upper-section sliding rail and a lower-section sliding rail are respectively arranged on two sides of the inner sides of the derrick upper section and the derrick lower section; two ends of the pulley are in contact with the upper-section slide rail and the lower-section slide rail; the working surfaces of the upper-section sliding rail and the lower-section sliding rail in contact with the tackle are on the same plane to form a tackle guide channel; the middle of the pulley is connected with a top drive; the top drive is hung below the traveling block and moves up and down along with the traveling block. According to the disassembly-free top drive well drilling device pulley and guide rail system, the assembly and disassembly time is saved, the danger in the assembly and disassembly process is reduced, and the well drilling efficiency and the construction quality are improved.

The application provides a small semi-automatic tremella rod hole expanding machine, which comprises a main frame, a feeding mechanism, a hole expanding power mechanism, a transmission mechanism and a plurality of hole expanding mechanisms, the main frame comprises a main machine table top, a first supporting table top, a second supporting table top and a guide column, the hole expanding power mechanism, the transmission mechanism and the plurality of hole expanding mechanisms are all located on the first supporting table top, the hole expanding cylinder on the second supporting table top drives the whole first supporting table top to slide up and down along the guide column through the first push plate; the hole expanding mechanism comprises a hole expanding support, a rotating assembly and a blade, the hole expanding power mechanism drives the blade to rotate through the transmission mechanism and the rotating assembly in sequence; the feeding channel of the feeding mechanism is located below the blade, and the blade is used for expanding holes on the tremella rod on the feeding channel. The application realizes semi-automatic hole expansion of the tremella rod, and also ensures that the shape of the incision formed by hole expansion is regular and the size is stable, thereby improving the yield and quality of tremella.

A tackle special for a top drive device comprises a vertical rail A and a vertical rail B. The vertical rail A and the vertical rail B are connected with each other, and relates to the field of oil exploration, a sliding device is arranged on the vertical rail A, the vertical rail A and the vertical rail B are in sliding connection, the sliding device and the top drive device are connected, the sliding device and the top drive device are fixedly connected, and the sliding device comprises a vertical frame and a transverse frame. The left end and the right end of the transverse frame are each connected with a set of vertical frames, the vertical frames are perpendicular to the transverse frame, the vertical frames are connected with the vertical rails B in a sliding mode, meanwhile, the vertical frames are further connected with the top drive device in a fixed mode, and the transverse frame is connected with the two sets of vertical frames to form a buckled state. The top drive device can be perfectly buckled to the vertical rail A or the vertical rail B through the locking device, meanwhile, the vertical rail A or the vertical rail B is locked through the guiding device, the vertical guiding function of the top drive device can be achieved, the locking function can be achieved, the top drive device is prevented from falling off, the service life of the top drive device is longer, and meanwhile use is safer.

A system including an instrumented sub for supporting subterranean operations, the instrumented sub can include an upper and lower portion with a flow passage extending therethrough, and a valve that selectively permits or restricts fluid flow through the flow passage, and a rotary interface coupled to the upper portion and including a rotary portion and a stationary portion, where the rotary portion is rotationally fixed to the upper portion and rotates with the upper portion, where the stationary portion is rotationally coupled to the rotary portion, and where the rotary interface transfers communication signals between the stationary portion and the rotary portion to transmit commands or data to or receive the commands or data from one or more components of the instrumented sub. Can also include a method of using the instrumented sub to determine a vertical position or movement of a top drive.

The utility model provides a well drilling top drive conductive wire passing and internal blowout prevention function integrated pup joint which comprises an internal blowout preventer, a rotor of a conductive slip ring is fixedly connected to the middle of the internal blowout preventer through a key, a stator of the conductive slip ring is connected with the rotor of the conductive slip ring in a matched mode, and a rotor output end is installed at the outer end of the rotor of the conductive slip ring. A stator input end and a stator fixing block are installed at the outer end of a stator of the conductive slip ring, the stator input end is connected with a stator output cable, and a rotor output end is connected with a cable in a small hole in the protection connector through a rotor output cable. The device is convenient to use, the cable can pass through a drilling top drive, and the device has an internal blowout prevention function.

The utility model provides special auxiliary equipment for mounting a saddle linear rail of a machine tool, which relates to the technical field of machine tool manufacturing and comprises a tool body (1), a base (2), a worktable (4), a rotary table sliding plate (6), a rotary table (7), a stand column (9), a drilling spindle box (14), a tapping spindle box (15) and a spindle box body (16). Each of the drilling spindle box (14) and the tapping spindle box (15) comprises a spindle box body (16), a gear (17), a moving shaft (18) and a cutter (19), and a rotating motor (20) at the top drives the gear (17) to drive the moving shaft (18) and the cutter (19) to rotate; the thread drilling and tapping efficiency is greatly improved, the stress concentration problem generated by machining is effectively eliminated and relieved, and the stability and reliability of a whole machine tool system are improved.

A rotary device special for an oil exploration top drive device relates to the field of exploration and comprises a rotary body, a convex ring is arranged on the rotary body, the rotary body and the convex ring are fixedly connected, a fluted disc is arranged on the convex ring and connected with two rotating devices, the rotating devices are fixed on a shaft sleeve through a fixing frame, and the shaft sleeve is connected with the convex ring through a bearing. The two acting ends of the rotating body are each provided with a connecting device, the front end and the rear end of the rotating body are each provided with a supporting device B and a supporting device A. Maintenance cost is reduced, the connecting devices in the device are of a structure that concave holes are placed upside down, meanwhile, supporting columns are further arranged in the concave holes, all force bearing points are located on the supporting columns, and when the supporting columns are damaged, the supporting columns are not damaged. And the supporting columns can be replaced, so that the main body is prevented from being replaced, the cost is prevented from being increased, and the effect of reducing the cost is achieved.

A well rig can include a mast, and multiple guide assemblies distributed along the mast. The guide assemblies are configured to laterally support a tubular string. A method of operating a well rig can include mounting multiple guide assemblies spaced apart along a length of a mast of the well rig, and actuating each of the guide assemblies between open and closed configurations. In the open configuration the guide assembly does not laterally support a tubular string, and in the closed configuration the guide assembly laterally supports the tubular string. Another method can include mounting multiple guide assemblies spaced apart along a length of a mast of a well rig, and displacing a top drive along the mast. The guide assemblies open in succession as the top drive descends along the mast, and the guide assemblies close in succession as the top drive ascends along the mast.

A gear box special for an oil exploration top drive device relates to the field of oil exploration and comprises a box body, a transmission device is arranged in the box body and connected with an input device A and an input device B respectively, the transmission device is further connected with a drill rod, an upper cover covers the box body, the upper cover and the box body are connected through bolts, and the bottom of the box body is connected with a bottom shell. And the gear B and the gear A are meshed with each other, the single set of gears are connected, it can be guaranteed that the structure is simple, meanwhile, it can be guaranteed that dislocation cannot occur between the gears, and the stability of the gears can be guaranteed.

The invention relates to the technical field of petroleum equipment, in particular to a drill floor face manipulator which comprises a base assembly, a telescopic arm assembly and a pushing and holding clamping piece, the pushing and holding clamping piece is used for pushing and holding or clamping a drilling tool, the base assembly is used for being arranged on a drill floor face, the telescopic arm assembly is arranged on the base assembly, and the pushing and holding clamping piece is arranged on the telescopic arm assembly. The base assembly can drive the telescopic arm assembly to reciprocate in the first direction and is used for avoiding a catwalk, and the telescopic arm assembly can drive the pushing and holding clamping piece to reciprocate in the second direction and move to a preset position. The installation space and the installation position of the drill floor face mechanical arm on the drill floor face can be flexible and variable, and the drill floor face mechanical arm is not affected by a derrick, a top drive and a top drive guide rail.

The utility model provides a sheet metal part laser cutting anti -deformation support frock belongs to sheet metal processing technical field, including moving mechanism, including support frame, the universal wheel of fixed connection in support frame bottom, the mounting bracket of fixed connection in support frame inner wall, the top drive air cylinder of adaptive installation in support frame side wall, fixed mechanism, including the mounting plate of fixed connection in mounting bracket side wall, the installation mouth of opening in mounting plate side wall, the clamping seat of fixed connection in mounting plate inner wall, the fixed frame of fixed connection in clamping seat side wall. The utility model discloses through the setting of moving mechanism and fixed mechanism, has realized the adaptive fixing of different size, shape sheet metal part, and moving mechanism adopts universal wheel and top drive air cylinder combination, has guaranteed frock's nimble movement and has ensured the stability when working, and fixed mechanism passes through the cooperation of adjusting assembly and clamping assembly, utilizes the accurate positioning of small -size sheet metal part of top block driven by top drive air cylinder.

The invention discloses a quick tripping drilling machine and a tripping and tripping method thereof. The drilling machine comprises a site multifunctional device which is arranged on the front ground and used for turning a drilling tool into a horizontal state or a vertical state; the power drill rod box is arranged on at least one side of the site multifunctional device and used for conveying drilling tools to the site multifunctional device or receiving the drilling tools from the site multifunctional device. The base is arranged on the ground on the rear side of the site multifunctional device, the base is provided with a power slip used for clamping a drilling tool in the center of a well mouth, an iron roughneck used for screwing on and screwing off at the position of the well mouth and a derrick, a top drive is arranged in the derrick, a power elevator is hung on the lower portion of the top drive, and a pushing manipulator is arranged on the middle rear portion of the derrick. By means of flexible configuration and collaborative operation of the ground site multifunctional device and the power drill rod box, the three-joint unit does not need to be stored on a table top in the tripping operation process, and operation is directly conducted between the drill rod box and a well mouth.

The present application provides a kind of formation threshold WOB and threshold torque determination method and device, belong to drilling engineering technical field, the method includes: obtaining different preset top drive speed under, in the preset WOB interval, the mechanical drilling speed, torque value and drill bit vibration parameters corresponding to different WOB value;For each preset top drive speed: based on the WOB value of the preset top drive speed and the mechanical drilling speed corresponding to the WOB value, determine the initial threshold WOB of the preset top drive speed from the WOB value;Based on the initial threshold WOB of the preset top drive speed, the torque value corresponding to the preset top drive speed is determined as the initial threshold torque of the preset top drive speed;Based on the drill bit vibration parameters corresponding to initial threshold WOB, initial threshold WOB and initial threshold torque are corrected, and formation threshold WOB and formation threshold torque are obtained.The present application has the advantages of simple calculation method, more accurate result, can effectively guide the selection of drill bit and screw rod, improve the mechanical drilling speed, and improve the rock breaking efficiency.

A top drive drilling device relates to the field of petroleum drilling and comprises a drilling platform, a derrick is mounted on the drilling platform, a traveling block is assembled on the derrick, a top drive system is further movably mounted in the vertical direction of the derrick, and an adjusting component and an elevator component are further assembled on the top drive system. Secondly, by means of the elevator assembly, when the drill rod needs to be connected, the adjusting assembly can rapidly adjust the position of the elevator assembly, the drill rod is automatically checked through the driving plate arranged in the shape of the Chinese character'ba ', the two bushings are opened in a linkage mode, and when the drill rod is completely located in the bushings, the elevator assembly can automatically adjust the position of the elevator assembly; the drill rod can be locked through the dual effects of the locking disc and the pre-tightening spring, so that the elevator assembly works more stably; and the interior of the lining is gradually expanded from bottom to top, the drill rod is prevented from integrally falling down in the receiving or pulling-out process, and finally abrasion caused in the drill rod entering and exiting process can be avoided through the pin rollers.

The present application relates to a top drive plug valve, relates to the field of oil and gas drilling and well control equipment, the cone barrel is coaxially arranged in the valve body, and is arranged close to the feed end of the valve body, the valve core is arranged close to the discharge end of the valve body, the cone barrel and the side wall of the valve body form an annular cavity, the cavity has an inlet close to the feed end of the valve body and an outlet close to the discharge end of the valve body, the inlet and the outlet are respectively provided with a feed one-way assembly and a discharge one-way assembly, the feed one-way assembly and the discharge one-way assembly enable the fluid to flow unidirectionally from the inlet to the outlet of the cavity, and the inner diameter of the cone barrel gradually decreases in the direction from the feed end to the discharge end of the valve body. The beneficial effects of the present application are: the structure design is reasonable, the structural parts are few, the stability is high, the application range is wide, the service life is long, and the opening and closing torque of the top drive plug valve under unbalanced pressure can be effectively reduced.

The utility model discloses a motor stator assembly press-fit tool, which relates to the technical field of stator press-fit and comprises a first clamping assembly and a second clamping assembly. The first clamping assembly and the second clamping assembly are installed on the base in a matched mode, and the first clamping assembly comprises a C-shaped frame; the bottom of the C-shaped frame is matched with the guide rail; the guide rail is fixedly installed on the base, and a movable clamping block and a fixed clamping block are installed in the C-shaped frame in a matched mode. The top of the movable clamping block and a push rod of the first electric push cylinder are fixedly installed. The first electric push cylinder is fixed at the top of the C-shaped frame; during use, a shell is placed on the C-shaped frame, a first electric push cylinder at the top of the C-shaped frame drives a movable clamping block to move up and down along a guide rod, adjustment of the distance between the movable clamping block and a fixed clamping block is achieved, and therefore the installation requirements of different shells are met; and the C-shaped frame can move back and forth along the guide rail at the bottom.

The utility model relates to the technical field of well drilling construction, in particular to a device for realizing casing circulation from a top drive, which comprises a top drive circulation joint, a well cementation hose and a casing circulation head, one end of the top drive circulation connector is connected with a top drive through a top drive square protection connector, and the other end of the top drive circulation connector is connected with one end of the well cementation hose. The other end of the well cementation hose is connected with one end of the casing pipe circulation head, and the other end of the casing pipe circulation head is in threaded connection with a casing pipe. According to the utility model, the problems of low timeliness and high risk in the conventional casing running operation are solved, and the goals of cost reduction and efficiency improvement are achieved.

The utility model relates to the field of foundation repair technology, and specifically is a kind of self-adapting deformation foundation treatment device, including bottom plate, mounting plate, T type support block, hydraulic cylinder, main beam, bearing groove and bearing plate, the bottom plate top is equipped with oil cylinder, the bottom plate top is equipped with hydraulic cylinder corresponding the both sides of oil cylinder, the hydraulic cylinder top drive end is connected with concave bracket by pivot, the oil cylinder and hydraulic cylinder top are equipped with main beam;The main beam one side is equipped with concave clamping groove and support plate respectively.According to the subsidence of different ground, by oil cylinder drive support frame upward lifting, again by motor drive T type support block to drive main beam and bearing groove adjustment angle, to close upper ground pile bottom and be lifted up to support it, and hydraulic cylinder drive concave bracket cooperate the rotation of pivot, to the effect of auxiliary support on the both sides of main beam, to improve the quality of repair ground surface, reach the effect of control uneven settlement repair.

This invention relates to the field of drilling operation technology and discloses a stable deep-earth drilling system with strong pressure resistance. The system includes a support frame, a lifting frame slidably connected to the support frame, a top drive assembly mounted on the lifting frame, an intermediate docking assembly located at the bottom of the top drive assembly and connected sequentially, and a drilling assembly fixed to the bottom of the lowest intermediate docking assembly. The intermediate docking assembly includes a ring-shaped main body. This invention facilitates drilling operations and is suitable for drilling operations at different depths. During drilling, coolant is sprayed from the inner ring above the drill bit to quickly cool the drill bit, effectively protecting its safety and improving drilling efficiency and stability. It eliminates the need to remove the drill rod for core sampling, facilitating subsequent drilling operations. After core sampling, coolant flow is facilitated, preventing the core from clogging the backflowing coolant and effectively avoiding drill rod blockage in the borehole, thus improving drilling safety and facilitating drilling and core sampling operations.

Various devices / methods to move a set of slips and control gripping force on a tubular are disclosed. The slips may be part of a mechanically-actuated casing running tool. The slips may be moved into and out of engagement with a tubular member by rotating a portion of the tool. The rotation may be applied from top drive unit. Set down force or other frictional measures on a pipe collar are not required. A series of interconnected gears through a clutch may be used to cause the slips to engage / a tubular member. A force may be applied to stop rotation of a threaded member, such as a power screw female or threaded nut, to facilitate threading action to set or release the slips. The control of torque applied on the top drive unit and the subsequent dis-engagement of the clutch enables active control of gripping force on the tubular member.